DNA-Templated Rational Assembly of BaWO4 Nano Pair-Linear Arrays
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- 作者：Na Li ; Faming Gao ; Li Hou ; Dawei Gao
- 刊名：Journal of Physical Chemistry C
- 出版年：2010
- 出版时间：October 7, 2010
- 年：2010
- 卷：114
- 期：39
- 页码：16114-16121
- 全文大小：468K
- 年卷期：v.114,no.39(October 7, 2010)
- ISSN：1932-7455
文摘
Confining the growth of inorganic materials in patterns using DNA as a molecular guide represents a versatile system for nanoscale construction. Here, we report the first example of efficiently attaching BaWO4 nanocrystals to dsDNA skeleton forming in patterns of well-defined nano pair-linear arrays. We have studied the influences of solution temperatures and concentrations of reagents on the pair-linear morphology. Results indicate that the two factors play the important roles in synthesizing the stable and desired patterned pair-linear arrays. We have tested four kinds of oligonucleotides to investigate systematically how nucleotide functionalities influence nanoparticle growth. We find that the phosphate and possibly the amino moiety binding site on adenine are the favorable targets to feed nanoparticle growth. On the basis of our findings, possible mechanisms are discussed.